Bi0.33 Ca0.89 Cu2 O7 Sr2 Tl0.78 Ledesert M, Maignan A, Chardon J, Martin C, Labbe P, Hervieu M, Raveau B Physica C 232 (1994) 387-395 (Tl, Bi) Sr2 Ca Cu2 O7 "1212" superconducting single crystal. A structural and magnetic study _cod_database_code 1001634 _database_code_amcsd 0015068 3.7922 3.7922 12.0661 90 90 90 P4/mmm atom x y z occ U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) Tl1 .0575 0 0 .1675 .031 .0137 .0046 0 0 0 Bi1 .0575 0 0 .0825 .031 .0137 .0046 0 0 0 Ca1 .5 .5 .5 .89 .0083 .0083 .0091 0 0 0 Tl2 .5 .5 .5 .11 .0083 .0083 .0091 0 0 0 Sr1 .5 .5 .2170 .0101 .0101 .0124 0 0 0 Cu1 0 0 .3642 .0058 .0058 .0106 0 0 0 O1 0 .5 .3693 .012 .010 .014 0 0 0 O2 0 0 .1660 .016 .016 .010 0 0 0 O3 .411 .411 0 .25 .016 .016 .02 -.01 0 0